Quoted: The M4 handguards on my LE6920 upper have a little too much side to side roll in them. As an experiment, I put the carbine handguards from my Colt 6530 onto the 6920 upper. Tight as a drum. The M4 hanguards on the 6530 upper had the same side to side play. So it's definitely the handguards that have a problem. Looks like there is not enough material at the rear of the handgurad tabs (that slide into the delta ring). What material could I use to build up this area? Bedding compound? JB Weld? Call Colt and see if they'll send me a new set?? Anything else?
Mick
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Every M4 handguard I've ever messed with has some side to side play as do most
AR handguards.
Any easy remedy is to cut "100 MPH"(OD Green military do it all tape 0r use duct tape)
tape into the shape of the four sections on the
HGs that lock in with the hanguard cap towards the Front sight tower. about two or
3 layers of tape in those four spots should eliminate most to all play.